FR4 Price Increase in 2026: What Actually Went Up

Electronic glass cloth used in FR4 went up through August 2026.

Reported China indications, mid-August versus October 2025:

7628: about RMB 4.4/m → about RMB 10.1/m
2116: about RMB 4.5/m → RMB 12.7/m
1080: RMB 4.5/m → RMB 13.1/m

Thin 2116 and 1080 moved first. Standard 7628 followed.

Copper-foil processing fees, resin, and thin inventories added more pressure.

These are cloth numbers. A laminate sheet and a finished PCB are different products. They will not all move by the same percentage.

Data cutoff: August 24, 2026. These are reported China market or supplier indications, not a global FR4 index.

What Is Actually Increasing: Glass Cloth, FR4 Laminate, or the Finished PCB?

A cloth number, a laminate sheet, and a finished-board quote are not the same product.

“FR4 price” can mean three different things.

Mix them up, and a supplier notice looks either crazy or too small.

Here's the chain:

Electronic yarn is woven into glass cloth.
Glass cloth (7628, 2116, 1080) is sold by the meter. These styles are not the same price.
Cloth plus resin plus copper becomes copper clad laminate.
A finished PCB then adds fabrication, yield, testing, volume, and order terms.

Supply-chain level	What you are quoting	Typical basis	Why you cannot mix them
Electronic yarn	Glass fiber yarn	RMB/tonne	Different yarns feed different fabrics
Electronic glass cloth	7628, 2116, 1080	RMB/meter	Style, source, and date change the number
FR4 prepreg / CCL	Laminate sheet	Sheet, area, or contract	Thickness, Tg, copper, and panel differ
Finished FR4 PCB	Fabricated board	Per board, panel, or area	Process, yield, and volume sit on top

Is FR4 in shortage?

Some glass-cloth and laminate inputs were reported tight in 2026.

There is not one global stock number called “FR4 shortage.”

For buyers: the cloth number is the start. Then ask which material and which construction you are comparing.

How Much Did 7628, 2116, and 1080 Change?

All three common fabrics rose from late-2025 quotes through August 2026.

Thin 2116 and 1080 moved faster than 7628.

Shanghai Securities News published quotes from two leading suppliers:

7628: RMB 4.3–4.5/m on 10 Oct 2025 → RMB 7.3–7.7/m on 1 June 2026
2116: RMB 4.4–4.5/m → RMB 9.3/m
1080: RMB 4.5/m → RMB 9.7/m

Cailian Press, citing Zhuochuang, later reported mid-August indications:

7628: RMB 10.0–10.2/m
2116: RMB 12.7/m
1080: RMB 13.1/m

Thin 2116 and 1080 moved faster than standard 7628. These are reported points, not a daily index.

One warning: these columns are not one index.

October and June are named-supplier quotes. August is a market indication.

Use them as direction and ranking. Not as your next contract price.

Did glass cloth rise by more than 100%?

Some common-spec averages were reported about 100% above the Q3 2025 low by early June. Thin grades later moved more from the October quotes.

That is growth from a low base.

It is not year-on-year unless the same month and the same grade exist.

And it is not the increase on every FR4 laminate or finished PCB.

Why AI Demand Tightened 2116 and 1080 First

AI servers did not just add “more PCB demand.”

They changed the material mix:

more layers
thinner dielectrics
lower-loss laminates

That pull hit 2116 and 1080 first. Ordinary 7628 sits farther from that demand.

A new furnace does not refill these grades the week it lights up.

You still need weaving, finishing, yield, and customer approval.

China Jushi started a Huai’an line in March 2026:

100,000 tonnes of electronic-grade glass fiber
390 million meters of electronic cloth
about 30% thin or ultra-thin
output released in batches

Xinhua also recorded the China Fiberglass Industry Association: high-end looms still depend on imports, and deliveries have stretched.

If you buy lighting boards, this is background. It is not a reason to send an AI-server RFQ to a single-sided aluminum PCB factory.

Why Did Standard 7628 Rise Too?

Because of a spillover shortage.

Mainstream FR4 still needed 7628.

Producers just had a stronger reason to spend yarn, loom time, and finishing on thinner, higher-value cloth.

Then three things happened at once:

7628 output grew more slowly
consumer, auto, industrial, and standard-FR4 demand did not disappear
CCL buyers ordered for continuity, not only for this week

Xinhua already described the shortage spreading from high-end grades to ordinary ones.

In August, Zhuochuang analyst Liu Yang told Cailian Press that leading producers had compressed conventional 7628. He described the industry as near zero inventory. That is an analyst read, not an official national stock figure.

Why did 7628 rise if AI boards use thinner cloth?

Because a product-mix shift can tighten a standard material indirectly.

7628 demand stayed. Shared capacity moved.

Direct effect on thin cloth	Spillover on 7628
More thin-dielectric demand	Shared resources leave ordinary cloth
Tighter yarn qualification	Standard output grows more slowly
Longer yield ramp	Buyers compete for allocation
Higher value per meter	Spot 7628 gets harder to buy

7628 did not become an AI fabric. Its available supply tightened because other grades paid more.

Glass Cloth Was Not the Only FR4 Cost Driver

Glass cloth was the big 2026 mover.

It was not the only line on a CCL bill.

A laminate supplier also pays for:

copper foil
resin
energy, yield, freight, and inventory

Copper foil is a separate number.

Cailian Press, citing SMM as of 3 August 2026:

18 μm CCL copper-foil processing fee: more than 30% above the start of the year
35 μm and 70 μm: about 15%

Those are processing fees, not the full foil price.

A July Kingboard notice, reported in the same piece, cited glass cloth and copper foil. That is one supplier, one date. Not a global FR4 index.

How long will FR4 stay tight?

Don't hang a purchasing plan on a month.

Easing needs qualified yarn, looms, yield, customer approval, and more normal inventories.

A capacity announcement is only step one.

Why Finished PCB Prices Do Not Rise One-for-One

A finished PCB quote is not a glass-cloth formula.

Two factories can see the same cloth market and still move differently.

Quote variable	Why the pass-through changes
Grade, Tg, compliance	Different resin and source
Board / core thickness	Different cloth and resin content
Copper thickness	Material plus processing
Layer count	More laminate and more process
Panel utilization	Poor nesting makes inflation louder per board
Existing inventory	Can delay the increase
Spot / allocation	Urgent lots cost more
Quantity and timing	Setup and terms change the per-board hit
Yield and surface finish	Finished cost is more than CCL

Does a 100% cloth increase mean PCB prices double?

No.

Glass cloth is one input to CCL.

CCL is one part of a finished board.

The 100% may also be measured from a 2025 low, not from your last order.

Are FR4 prices per sheet comparable?

Only when panel size, thickness, copper, grade, Tg, volume, source, and terms match.

A generic RMB/sheet headline is not a check against your board.

Quick example:

Quote A: standard laminate in stock, good nesting
Quote B: odd thickness, heavier copper, urgent material, poor panel

Same news headline. Different finished-board result.

Compare the same revision before you accept a new number. PCB material is part of that comparison.

What PCB Buyers Should Check Before Accepting a Price Revision

Name the material first.

Then compare the old quote and the new quote on the same file.

Name the material. Cloth, CCL, copper foil, resin, or a named laminate family?
Lock the comparison. Same Gerber, thickness, copper, Tg, quantity, finish, and delivery window.
Ask the scope. New orders, open orders, or only some constructions?
Separate price from allocation. A higher price does not guarantee material.
Check validity. A market update is not a production-order quote.
Don't auto-swap laminates. Engineering review first.
Drop extras the design doesn't need. High-Tg, low-loss, and named brands cost more when they do no job.
Plan repeats. Use a review mechanism. Don't assume a forever-fixed price.
Save the file. Next review needs the same basis.

Send this	Why it matters
Gerber / drawing + revision	Stops comparison across different designs
Material family / approved alts	Defines what can be sourced
Finished thickness + copper	Main construction cost
Quantity + repeat forecast	Allocation and per-board economics
Delivery window	Routine vs urgent
Compliance / reports	Stops a late spec change

Lumina does not offer a price lock, a named FR4 brand list, or a standard FR4 lead time here.

Send the specification. Don't send “What % did FR4 rise?”

Does the Same FR4 Increase Apply to Aluminum PCB?

No. Not directly.

Conventional FR4 uses woven glass cloth and epoxy.

A standard single-sided aluminum PCB uses:

copper circuit
thermally conductive dielectric
aluminum base

7628, 2116, and 1080 are not direct inputs in the same way.

Cost exposure	Standard FR4 PCB	Standard single-sided aluminum PCB
7628 / 2116 / 1080	Direct input	Not the same structure
Copper foil	Direct	Direct
Dielectric	Glass/epoxy laminate	Thermally conductive dielectric
Base	Glass-reinforced laminate	Aluminum plate
Why you pick it	General electrical / mechanical use	LED heat spreading

7628, 2116, and 1080 are not direct inputs in a standard single-sided aluminum PCB.

Don't paste a 7628 percentage onto an aluminum quote.

Aluminum PCB vs FR4 is a structure choice first.

Aluminum PCB can still move with copper foil, dielectric, aluminum, energy, freight, and yield. Check those cost factors on their own.

Lumina's main product is single-sided aluminum PCB for LED lighting.

FR4 is not a main product. Suitable volume can be evaluated.

We do not make multilayer FR4, double-sided aluminum, high-speed, or AI-server boards.

FR4 and aluminum PCB can share some cost pressure. They do not share the same glass-cloth formula.

Conclusion

FR4 glass cloth did rise through August 2026. Thin grades moved first. 7628 followed.

Send the Gerber or drawing, material type, finished thickness, copper thickness, quantity, and delivery window.

Compare that file to the last revision before you treat a cloth percentage as the board price.

Lumina can review practical single-sided aluminum PCB requirements for LED lighting. Suitable high-volume FR4 is evaluated separately.